Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001)
       Division †Pteridospermatophyta Meyen
         Class †Moresnetiopsida Doweld (2001)
           Order †Pullarithecales Doweld (1998)
             Family †Austrocalyxaceae J.C. Vega & S.Archang. (2001)
               1 Genus †Austrocalyx J.C. Vega & S.Archang. (1996)
               2 Genus †Jejenia J.C. Vega & S.Archang. (2000)
               3 Genus †Polycalyx J.C. Vega & S.Archang. (2001)
               4 Genus †Rinconadia J.C. Vega (1995)